US4058155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable centrifugal casting machine
Assignee: Crown Manufacturing Co
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Filing: 1974-11-12
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Granted: 1977-11-15
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Expires: 1994-11-12
Abstract
Abstract A spring action portable centrifugal casting machine having a castor arm freely pivotable at a centrally balanced point has a horizontal pivotable extension arm attached thereto, and a crucible and flask entirely enclosed within a portable shield mounted on said extension arm.
Inventors
- 👤 George Eash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:07
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/06; B22D13/063
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
An improved centrifugal casting device for open air use, comprising: a. a crucible having a recess therein; b. a flask having a closed outer end and an open inner end, said flask containing a mold in communication with said crucible recess through said inner end; c. mounting means supporting said crucible and flask for rotation about a vertical axis laterally spaced from said crucible and flask; and d. a shield having side walls and an end wall removably carried by said mounting means, said walls enclosing said crucible recess and said flask sides and outer end, and said mounting means including means supporting said end wall being outwardly of said crucible and flask during centrifugal operation.
Claim 2
Dependent Claim
116 words
An improved centrifugal casting device for open air use, comprising: a. a crucible having a recess therein; b. a flask having a closed outer end and an open inner end, said flask containing a mold in communication with said crucible recess through said inner end; c. mounting means supporting said crucible and flask for rotation about a vertical axis laterally spaced from said crucible and flask; and d. a shield having side walls and an end wall removably carried by said mounting means, said walls enclosing said crucible recess and said flask sides and outer end, and said mounting means including means supporting said end wall being outwardly of said crucible and flask during centrifugal operation.
Claim 3
Dependent Claim
44 words
The improved centrifugal casting device of claim 1 in which said shield comprises a hollow member with said side walls forming a first lower segment and a second upper segment, said hollow member being closed at at least one end by said end wall.
Claim 4
Dependent Claim
48 words
The improved centrifugal casting device of claim 2 in which the side walls of said hollow member define an open end opposite said end wall and a wall portion removed to form a cut out portion along its open end in the side wall forming said upper segment.
Claim 5
Dependent Claim
20 words
The improved centrifugal casting device of claim 2 in which said hollow member is removably mounted to said mounting means.
Claim 6
Dependent Claim
17 words
The improved centrifugal casting device of claim 3 in which said hollow member is cylindrical in shape.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |